My Apply
My Apply

Delta Chat

Delta Chat logo.png

Enabling decentralized secure messaging utilizing email provider infrastructure

Delta Chat is a new, unique messaging application that functions like any text messaging tool but is built with an email backend, enabling enhanced user privacy and security with end-to-end encryption via Autocrypt. Delta Chat is novel in that it does not require a phone number, has no central server, and has email anonymity potential, offering resilience to surveillance that is vital for users in repressive contexts. OTF support will focus on maturing Delta Chat's development, building cross-platform and multi-device support while also conducting user research in order to improve usability features.

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Current project status

Just an idea (Pre-alpha)
It exists! (Alpha/Beta)
It's basically done (Release)
People use it (Production)

Funding to date

2018 $203,020 12 months
Internet Freedom Fund

Total Funding: $203,020

Addressed problems

  • Technical attacks against government critics, journalists, and/or human rights organizations (Cyberattacks)
  • Repressive surveillance or monitoring of communication
  • Blocking, filtering, or modification of political, social, and/or religious content (including apps)
  • Policies, laws, or directives that increase surveillance, censorship, and punishment
  • Government practices that hold intermediaries (social networks or ISPs) liable for user content


  • Privacy enhancement
  • Security from danger or threat online


  • Software or hardware development
  • Testing
  • Research
  • Technology development


  • Journalists
  • General public
  • Activists
  • Advocacy groups/NGOs

Region(s) archive

  • Eastern Europe
  • Global

Project status

  • It Exists! (Alpha/Beta)


  • Ukraine
  • Russia

Technology attributes

  • Application deployment
  • Cryptography
  • Desktop App
  • Mobile application (clientside)
  • Sensitive data
  • User interface/experience
  • Anonymity

We wrote about it

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